×

Antenna apparatus

  • US 8,482,474 B2
  • Filed: 05/11/2009
  • Issued: 07/09/2013
  • Est. Priority Date: 05/12/2008
  • Status: Active Grant
First Claim
Patent Images

1. An antenna apparatus, comprising:

  • a dipole antenna including a first radiation element and a second radiation element, each having a quarter wavelength of a first frequency;

    a high-frequency circuit for conducting communications of a high frequency signal;

    a ground portion corresponding to the high-frequency circuit;

    a signal conductor which connects the dipole antenna to the high-frequency circuit and the ground portion, the signal conductor having a length where the sum total of the length of the first radiation element and the length of the signal conductor, and the sum total of the length of the second radiation element and the length of the signal conductor become a quarter wavelength of a second frequency, respectively;

    a first switch for blocking passage of a signal of the first frequency and allowing passage of a signal of the second frequency; and

    a second switch for allowing passage of the signal of the first frequency and blocking passage of the signal of the second frequency.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×